In this work we have analyzed the effects of Ti doping on structural and electrical properties of α-Fe2O3. When the amount of added Ti (5 wt.%TiO2) was within the solubility degree and XRD, SEM and EDS analysis revealed a homogenous hematite structure, with lattice parameters a= 5.03719(3) Å, c=13.7484(1) Å slightly increased due to incorporation of Ti into the rhombohedral hematite lattice. Higher amounts of Ti (10 wt.%TiO2) resulted in the formation of pseudobrookite, besides hematite, confirmed by SEM and EDS analysis. Studies of electric properties in the temperature range 25-225oC at different frequencies (100 - 1Mz) showed that Ti doping improved electrical conductivity. Impedance analysis was performed using an equivalent circuit, showing one relaxation process and suggesting dominant grain boundary contribution. [Projekat Ministarstva nauke Republike Srbije, br. III45014 i br. III43008]
Keywords:
X-ray diffraction / electrical properties / scanning electron microscopy / Ti doping / α-Fe2O3
Source:
Science of Sintering, 2013, 45, 3, 281-292
Publisher:
Belgrade : International Institute for the Science of Sintering
TY - JOUR
AU - Nikolić, Maria Vesna
AU - Sekulić, D. L.
AU - Slankamenac, Miloš
AU - Aleksić, Obrad S.
AU - Danninger, H.
AU - Halwax, E.
AU - Pavlović, Vladimir B.
AU - Nikolić, Pantelija M.
PY - 2013
UR - https://dais.sanu.ac.rs/123456789/557
AB - In this work we have analyzed the effects of Ti doping on structural and electrical properties of α-Fe2O3. When the amount of added Ti (5 wt.%TiO2) was within the solubility degree and XRD, SEM and EDS analysis revealed a homogenous hematite structure, with lattice parameters a= 5.03719(3) Å, c=13.7484(1) Å slightly increased due to incorporation of Ti into the rhombohedral hematite lattice. Higher amounts of Ti (10 wt.%TiO2) resulted in the formation of pseudobrookite, besides hematite, confirmed by SEM and EDS analysis. Studies of electric properties in the temperature range 25-225oC at different frequencies (100 - 1Mz) showed that Ti doping improved electrical conductivity. Impedance analysis was performed using an equivalent circuit, showing one relaxation process and suggesting dominant grain boundary contribution. [Projekat Ministarstva nauke Republike Srbije, br. III45014 i br. III43008]
PB - Belgrade : International Institute for the Science of Sintering
T2 - Science of Sintering
T1 - Structural and electrical properties of Ti doped α-Fe2O3
SP - 281
EP - 292
VL - 45
IS - 3
DO - 10.2298/SOS1303281N
UR - https://hdl.handle.net/21.15107/rcub_dais_557
ER -
@article{
author = "Nikolić, Maria Vesna and Sekulić, D. L. and Slankamenac, Miloš and Aleksić, Obrad S. and Danninger, H. and Halwax, E. and Pavlović, Vladimir B. and Nikolić, Pantelija M.",
year = "2013",
abstract = "In this work we have analyzed the effects of Ti doping on structural and electrical properties of α-Fe2O3. When the amount of added Ti (5 wt.%TiO2) was within the solubility degree and XRD, SEM and EDS analysis revealed a homogenous hematite structure, with lattice parameters a= 5.03719(3) Å, c=13.7484(1) Å slightly increased due to incorporation of Ti into the rhombohedral hematite lattice. Higher amounts of Ti (10 wt.%TiO2) resulted in the formation of pseudobrookite, besides hematite, confirmed by SEM and EDS analysis. Studies of electric properties in the temperature range 25-225oC at different frequencies (100 - 1Mz) showed that Ti doping improved electrical conductivity. Impedance analysis was performed using an equivalent circuit, showing one relaxation process and suggesting dominant grain boundary contribution. [Projekat Ministarstva nauke Republike Srbije, br. III45014 i br. III43008]",
publisher = "Belgrade : International Institute for the Science of Sintering",
journal = "Science of Sintering",
title = "Structural and electrical properties of Ti doped α-Fe2O3",
pages = "281-292",
volume = "45",
number = "3",
doi = "10.2298/SOS1303281N",
url = "https://hdl.handle.net/21.15107/rcub_dais_557"
}
Nikolić, M. V., Sekulić, D. L., Slankamenac, M., Aleksić, O. S., Danninger, H., Halwax, E., Pavlović, V. B.,& Nikolić, P. M.. (2013). Structural and electrical properties of Ti doped α-Fe2O3. in Science of Sintering
Belgrade : International Institute for the Science of Sintering., 45(3), 281-292.
https://doi.org/10.2298/SOS1303281N
https://hdl.handle.net/21.15107/rcub_dais_557
Nikolić MV, Sekulić DL, Slankamenac M, Aleksić OS, Danninger H, Halwax E, Pavlović VB, Nikolić PM. Structural and electrical properties of Ti doped α-Fe2O3. in Science of Sintering. 2013;45(3):281-292.
doi:10.2298/SOS1303281N
https://hdl.handle.net/21.15107/rcub_dais_557 .
Nikolić, Maria Vesna, Sekulić, D. L., Slankamenac, Miloš, Aleksić, Obrad S., Danninger, H., Halwax, E., Pavlović, Vladimir B., Nikolić, Pantelija M., "Structural and electrical properties of Ti doped α-Fe2O3" in Science of Sintering, 45, no. 3 (2013):281-292,
https://doi.org/10.2298/SOS1303281N .,
https://hdl.handle.net/21.15107/rcub_dais_557 .
